Historic Marine Geologic data reports available are from academia, government, and
non-U.S. sources. These reports were originally in paper or film form and were scanned
to Portable Document Format (PDF) to enable online browse/download and archive in
digital form. The following are examples of the types of analyses of sediment or rock
from the ocean floor or lakebeds worldwide which may be included in individual data
reports: descriptions of composition and/or lithology, grain size and other physical
properties, mineralogy, geochemistry, paleontology, petrology, paleomagnetism and
acoustics of sediment. They may also contain low-resolution photographs of cores or
dredges, or the ocean floor. Reports are searchable via the Marine Geology Digital
Inventory and may also be linked to/discoverable via the Index to Marine and Lacustrine
Geological Samples (IMLGS). Scanned images of most paper data reports are available
to view online, however, some Copyrighted reports contributed through the World Data
Center System are available for on-site inspection only. For these reports, the geologic
inventory provides links to the contributing institution for ordering.